Re: [PATCH] virtio-console: avoid DMA from vmalloc area

2021-07-28 Thread Xianting Tian
在 2021/7/28 下午5:01, Arnd Bergmann 写道: On Wed, Jul 28, 2021 at 10:28 AM Xianting Tian wrote: 在 2021/7/28 下午3:25, Arnd Bergmann 写道: I checked several hvc backends, like drivers/tty/hvc/hvc_riscv_sbi.c, drivers/tty/hvc/hvc_iucv.c, drivers/tty/hvc/hvc_rtas.c, they don't use dma. I not finished

Re: [PATCH] virtio-console: avoid DMA from vmalloc area

2021-07-28 Thread Arnd Bergmann
On Wed, Jul 28, 2021 at 10:28 AM Xianting Tian wrote: > 在 2021/7/28 下午3:25, Arnd Bergmann 写道: > > I checked several hvc backends, like drivers/tty/hvc/hvc_riscv_sbi.c, > drivers/tty/hvc/hvc_iucv.c, drivers/tty/hvc/hvc_rtas.c, they don't use dma. > > I not finished all hvc backends check yet. But I